It seems like you're agreeing with me on the reasoning why AI art is art, you just refuse to accept AI as art. So let's try a different way. Who says art has agemcy or intent? Clearly it's not just "everything made by humans" because if I showed you the toilet paper I used to wipe my ass we can both agree that it's not art. Neither is the comment I'm writing right now. So there needs to be something more that separates not art and art. The two most common ways would be the intent of the artist and the perceived intent of the viewer.

If it's what the artist intended the am artist can prompt AI until AI generates the image the artist intended. Since the artist intended the AI generated image to look that way the intent is inherited from the artist.

If it's what the viewer perceived we can reach the original question I postulated. If an image makes you feel something and you can't know if it's made by the artist or by AI, how do you know it's art or not? If we take by whether you perceive intent of not then you're attributing intent to art and it doesn't matter how it was made. If you feel something and after the fact you find out it was AI generated image then it doesn't invalidate what you felt.

You can come up with whomever to validate intent or agency and I'll show you how AI wouldn't play a role in that decision because AI isn't sentient. It's a tool like a camera or a paint brush or just chalk. We give the intent by using the tools we have.